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Absolutely — and this is exactly what SPARK was mainly designed for.

Your Raynaud's doesn't only happen in winter. Summer office air con, meeting rooms, shopping centres, supermarket freezer aisles, iced drinks at coffee shops, the temperature shock when stepping in and out of an Underground carriage — any of these can turn your fingertips white in a minute or two. You might already be in the habit of taking a thin jacket out in June, or hiding your hands under the meeting room table to pretend you're fine — but the heated gloves on the market are either ski gear or look like medical aids, and there's nothing that lets you wear them in a coffee shop without standing out.

SPARK's design language (matt black, slim, low-profile) is built for exactly this moment — to let you wear them in meeting rooms, coffee shops or restaurants without drawing attention, with the visual weight of a quality thin leather glove rather than outdoor gear.

The low setting (NTC 35°C, estimated fingertip 38°C) is calibrated specifically for indoor air conditioning — warm enough to keep your blood flowing, but not so hot that your hands sweat. The medium setting (NTC 39°C) suits stronger air con or longer static work.

If your office runs at 18–21°C year-round, the meeting rooms freeze you so you can't type properly, and the supermarket freezer aisle is a quiet dread — SPARK is for you.

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Yes — SPARK has been designed from day one to be layered. We call it Layer 1 — your existing thicker gloves or waterproof outers are Layer 2.

To make the layering work smoothly, we've made several deliberate design decisions:

• Low-friction elastane on the back of the hand — so outer gloves slide on without snagging or pulling
• Flat seams, no external stitching — so outer gloves don't bunch up over them
• Cable exit on the back of the hand at the wrist — so it doesn't catch on your sleeve, and runs naturally up your forearm
• Magnetic connector hidden on the outside of the cuff — so it sits flat between Layer 1 and Layer 2, with no bulge
• Total thickness of 1.0–1.2 mm — so layering doesn't make your hands feel bulky

This is a deliberate choice: a glove that tries to do everything ends up doing nothing particularly well. We'd rather make one layer brilliant and let you choose your own outer — your existing ski gloves, motorbike gloves, waterproof gloves or daily winter gloves can all sit comfortably over SPARK.

A note on sizing: the outer glove ideally sits half a size to a full size larger than your SPARK, to avoid compression that affects how the heated lining fits your fingers. If your outers are very fitted, you might find the combination feels tight — in that case, you can wear SPARK on its own in milder conditions.

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That's a good question, and you're right to be concerned.

Sweat cooling can directly trigger a Raynaud's attack — when your hand sweats inside a warm glove, the sweat evaporates and pulls heat away with it, sending your fingertip temperature plummeting and triggering vasospasm. "I thought warmth was the goal, then I got colder once I sweated" is a failure mode the industry rarely talks about.

How SPARK addresses this:

The liner uses a blend with 30%+ merino wool (rather than mostly polyester). Merino's natural moisture-wicking ability is core to this design, not an add-on — wool fibres absorb several times more moisture than polyester, and stay warm even when damp. This keeps your fingertips dry under low-intensity use, and prevents sweat from building up.

Practical advice:

• When you come indoors and no longer need heat, switch to low or off to avoid overheating and sweating
• If the inside of the glove feels damp, take them off and let them air dry as soon as you can
• Wash every fortnight if you're using them daily — to keep the merino fibres absorbent, since oils and salts gradually clog the fibre structure
• Don't put gloves straight into the suede pouch after sweating — air them out first
• Temperature transitions are the high-risk moments — coming from cold outdoors into a heated room, or taking off your coat, prompts your body to start sweating. If you're going to be somewhere warm for more than 10 minutes, switch to low or off five minutes ahead, giving the gloves time to adapt with your body temperature
• Pre-heat before going out — switch SPARK on 5 minutes before leaving, so your fingertips are warm before you step into the cold. This is more sweat-friendly than letting your hands go cold and then heating them, because you avoid the sharp temperature shock that prompts your body to react

Use this text to answer questions in as much detail as possible for your customers.

Use this text to answer questions in as much detail as possible for your customers.

Use this text to answer questions in as much detail as possible for your customers.